Nasal mask with elastic headband



FIG. 1 is a top left side perspective view of a nasal mask with an elastic headband showing my new design;

FIG. 2 is a front upper perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof. 

I claim the ornamental design for the nasal mask with elastic headband, as shown and described. 